Philips PM3320 Operating Manual page 179

8.0
8.1
8.1.1
CoA
81.1.2
8-1E
ACCESSORY INFORMATION
ACCESSORIES SUPPLIED WITH THE INSTRUMENT
Passive probe PM8929/09 with automatic range indication
Introduction
This 10 xattenuator probe is provided with a special BNC plug with built-in resistor for automatic
range indication to advance the V/DIV reading by 10x.
The probe consists of 3 separate units:
-a compensation box having a BNC male connector output,
-a cable assembly,
-a probe body including probe tip and RC assembly.
At delivery the probe has been adjusted to an oscilioscope with an input capacitance of 12pF.
Characteristics
- Properties expressed in numerical values with tolerances stated, are guaranteed by the
manufacturer.
~ Numerical vaiues without tolerances are typical and represent the characteristics of an
average probe.
Electrical
Note: These characteristics are valid with atermination of 1MOhm oscilloscope input,
unless otherwise stated.
Designation Specification Additional information
Attenuation (d.c.) 1xt+or-2%
Input impedance
-parallel resis-
tance
at dic. 10 MOhm + or = 1,5 %
at ac. see fig. 8.1.
-parallel capaci- 13,5 pF (for parallel capacitance
tance as function of frequency,
up to 100 kHz see figure 8.1).
Compensation range
~input capacitance 5 pF ... 20 pF
of oscilloscope